Doc Gen is not working in NWC

HI, 

i am trying to get document generation,. Can someone please explain on how to get a template file from OneDrive/SharePoint and use Document Generation in Nintex workflow cloud to generate a filled template. 

I have watched the videos on youtube but they refer to the old fields i.e. connector etc, which are not available anymore. 

any help in this regard will be appreciated. 

thanks

Kam